SAAB WIS ONLINE

DTC C0575, C0580, C0585, or C0590

DTC C0575, C0580, C0585, or C0590

Diagnostic Instructions


Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.


DTC Descriptors

DTC C0575 02

Left Front Damper Actuator Circuit Short to Ground

DTC C0575 04

Left Front Damper Actuator Circuit Open

DTC C0575 0F

Left Front Damper Actuator Circuit Signal Erratic

DTC C0580 02

Right Front Damper Actuator Circuit Short to Ground

DTC C0580 04

Right Front Damper Actuator Circuit Open

DTC C0580 0F

Right Front Damper Actuator Circuit Signal Erratic

DTC C0585 02

Left Rear Damper Actuator Circuit Short to Ground

DTC C0585 04

Left Rear Damper Actuator Circuit Open

DTC C0585 0F

Left Rear Damper Actuator Circuit Signal Erratic

DTC C0590 02

Right Rear Damper Actuator Circuit Short to Ground

DTC C0590 04

Right Rear Damper Actuator Circuit Open

DTC C0590 0F

Right Rear Damper Actuator Circuit Signal Erratic

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Left Front Damper Actuator Control High

C0575 02

C0575 04

C0575 02

C0575 0F

Right Front Damper Actuator Control High

C0580 02

C0580 04

C0580 02

C0580 0F

Left Rear Damper Actuator Control High

C0585 02

C0585 04

C0585 02

C0585 0F

Right Rear Damper Actuator Control High

C0590 02

C0590 04

C0590 02

C0590 0F

Left Front Damper Actuator Control Low

C0575 02

C0575 04

C0575 04

C0575 0F

Right Front Damper Actuator Control Low

C0580 02

C0580 04

C0580 04

C0580 0F

Left Rear Damper Actuator Control Low

C0585 02

C0585 04

C0585 04

C0585 0F

Right Rear Damper Actuator Control Low

C0590 02

C0590 04

C0590 04

C0590 0F



Circuit/System Description

The suspension control module commands variable levels of current to each shock absorber actuator in response to rough road, braking or abrupt steering maneuver driving conditions. The current variation is performed by pulse width modulation (PWM) of the system voltage. The suspension control module continuously measures the actual current of each actuator. When a deviation between commanded and actual current is detected, a DTC is set.

Conditions for Running the DTC

System voltage is between 9-16 V.

Conditions for Setting the DTC


C0575 02, C0580 02, C0585 02, and C0590 02

A short to voltage or short to ground on the control high circuit is detected.

A short to ground on the control low circuit is detected.



C0575 04, C0580 04, C0585 04, and C0590 04

An open circuit on the control high or control low circuit is detected.

A short to voltage on the control low circuit is detected.


C0575 0F, C0580 0F, C0585 0F, and C0590 0F

An erratic current on the actuator circuit is detected.

Action Taken When the DTC Sets


The electronic suspension control is disabled for the duration of the ignition cycle.

The driver information center displays the SERVICE SUSPENSION SYSTEM message.


Conditions for Clearing the DTC


A present DTC will clear on the next consecutive malfunction-free ignition cycle.

A history DTC will clear after 41 consecutive malfunction-free ignition cycles.


Reference Information

Schematic Reference

Electronic Suspension Control Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Electronic Suspension Control Description and Operation

Electrical Information Reference


Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections

Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, command the Damper Actuator Increase and Decrease with a scan tool while observing the Damper Actuator Command parameter. The reading should vary between 0-1 600 mA. Listen/feel the damper actuator. The component should activate when changing between the commanded states.

Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the K19 Suspension Control Module and at the appropriate damper actuator.

2. Ignition ON, test for less than 0.3 V between the circuit terminal listed below and ground:

Front left damper actuator control circuit terminal 14 at the K19 Suspension Control Module harness connector

Front right damper actuator control circuit terminal 15 at the K19 Suspension Control Module harness connector

Rear left damper actuator control circuit terminal 4 at the K19 Suspension Control Module harness connector

Rear right damper actuator control circuit terminal 3 at the K19 Suspension Control Module harness connector

3. If greater than the specified value, test the control circuit for a short to voltage.

4. Test for less than 0.3 V between the circuit terminal listed below and ground:

Front left damper actuator control circuit terminal 13 at the K19 Suspension Control Module harness connector

Front right damper actuator control circuit terminal 16 at the K19 Suspension Control Module harness connector

Rear left damper actuator control circuit terminal 5 at the K19 Suspension Control Module harness connector

Rear right damper actuator control circuit terminal 2 at the K19 Suspension Control Module harness connector

5. If greater than the specified value, test the control circuit for a short to voltage.

6. Ignition OFF, test for infinite resistance between the circuit terminal listed below and ground:

Front left damper actuator control circuit terminal 14 at the K19 Suspension Control Module harness connector

Front right damper actuator control circuit terminal 15 at the K19 Suspension Control Module harness connector

Rear left damper actuator control circuit terminal 4 at the K19 Suspension Control Module harness connector

Rear right damper actuator control circuit terminal 3 at the K19 Suspension Control Module harness connector

7. If less than the specified value, test the control circuit for a short to ground.

8. Test for infinite resistance between the circuit terminal listed below and ground:

Front left damper actuator control circuit terminal 13 at the K19 Suspension Control Module harness connector

Front right damper actuator control circuit terminal 16 at the K19 Suspension Control Module harness connector

Rear left damper actuator control circuit terminal 5 at the K19 Suspension Control Module harness connector

Rear right damper actuator control circuit terminal 2 at the K19 Suspension Control Module harness connector

9. If less than the specified value, test the control circuit for a short to ground.

10. Test for infinite resistance between the circuit terminals listed below:

Front left damper actuator control circuit terminals 14 and 13 at the K19 Suspension Control Module harness connector

Front right damper actuator control circuit terminals 15 and 16 at the K19 Suspension Control Module harness connector

Rear left damper actuator control circuit terminals 4 and 5 at the K19 Suspension Control Module harness connector

Rear right damper actuator control circuit terminals 3 and 2 at the K19 Suspension Control Module harness connector

11. If less than the specified value, test the control circuits for a short circuit.

12. Test for less than 5 Ω between the circuit terminals listed below:

Front left damper actuator control circuit terminal 13 at the K19 Suspension Control Module harness connector and terminal 5 at the Q37LF Shock Absorber Actuator - Left Front harness connector

Front right damper actuator control circuit terminal 16 at the K19 Suspension Control Module harness connector and terminal 5 at the Q37RF Shock Absorber Actuator - Right Front harness connector

Rear left damper actuator control circuit terminal 5 at the K19 Suspension Control Module harness connector and terminal B at the Q37LR Shock Absorber Actuator - Left Rear harness connector

Rear right damper actuator control circuit terminal 2 at the K19 Suspension Control Module harness connector and terminal B at the Q37RR Shock Absorber Actuator - Right Rear harness connector

13. If greater than the specified value, test the control circuit for an open/high resistance.

14. Test for less than 5 Ω between the circuit terminals listed below:

Front left damper actuator control circuit terminal 14 at the K19 Suspension Control Module harness connector and terminal 6 at the Q37LF Shock Absorber Actuator - Left Front harness connector

Front right damper actuator control circuit terminal 15 at the K19 Suspension Control Module harness connector and terminal 6 at the Q37RF Shock Absorber Actuator - Right Front harness connector

Rear left damper actuator control circuit terminal 4 at the K19 Suspension Control Module harness connector and terminal A at the Q37LR Shock Absorber Actuator - Left Rear harness connector

Rear right damper actuator control circuit terminal 3 at the K19 Suspension Control Module harness connector and terminal A at the Q37RR Shock Absorber Actuator - Right Rear harness connector

15. If greater than the specified value, test the control circuit for an open/high resistance.

16. If all circuits test normal, test or replace the damper actuator and verify the DTC does not reset.

17. If the DTC resets, replace the K19 Suspension Control Module.


Component Testing


Static Test

1. Ignition OFF, disconnect the harness connector at the appropriate damper actuator.

2. Test for 2-3 Ω between the control terminal A and the low reference terminal B.

3. If not within the specified range, replace the damper actuator.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


Strut, Strut Component, or Spring Replacement

Shock Absorber Replacement (GNC) Shock Absorber Replacement (GNE)

Control Module References for suspension control module replacement, setup, and programming